The reduction in compressor power consumption will be proportional to the reduction in load
The gas volume of the screw refrigeration compressor is proportional to the rotational speed, and changing the compressor speed can achieve the purpose of adjusting the gas volume. However, the change of the speed will affect the relative leakage and friction loss of the unit, which will affect the efficiency of the screw refrigeration compressor. The literature analyzes the effect of rotational speed on compressor performance: at lower rotational speeds, the volumetric efficiency and adiabatic efficiency drop due to leakage increases sharply. At high speeds, leakage has little effect on efficiency, and volumetric efficiency and adiabatic efficiency change very little in the range of 2000 to 6000 rmin. This is because the volumetric flow rate of the compressor increases when the rotational speed is high, which is reflected in the increase in the adiabatic efficiency on the efficiency curve. However, as the rotational speed increases, the friction loss power increases, resulting in a decrease in mechanical efficiency. Therefore, in general, as the rotational speed increases, the effect of rotational speed on efficiency will gradually decrease. According to the above analysis, the change of the rotational speed has little effect on the leakage amount in a certain speed range. Therefore, when the rotational speed is adjusted within the range, the decrease of the power consumption of the compressor will be proportional to the decrease of the load. The machine maintains high efficiency and superior performance. Therefore, it is very economical to adjust the load by the shifting method within this rotational speed range. However, each screw compressor has its own optimal speed, which is much lower than the optimum speed. At the same time, the speed regulation of the motor also has its shifting range. The too low speed will also make the motor work unstable and the efficiency will decrease. Therefore, the shifting adjustment is only suitable for the adjustment within the load range of 100 to 60. Both of the above methods have their own weaknesses when used alone, and do not consider the pressure loss caused by the load change, which makes the internal and external pressure ratio unbalanced, and increases the additional power consumption of the unit. Therefore, in order to achieve good performance of the screw chiller under partial load conditions, it is necessary to optimize and match the energy adjustment method of the unit and the changes of the internal and external pressure ratios.
The main function of the edge banding is to seal the cross-section of the board, so as to avoid the damage of the board and the adverse factors (mainly moisture) in the process of use and prevent the formaldehyde inside the board from volatilizing, and at the same time achieve the effect of beautiful decoration.
The product has the following main features: smooth surface, no blistering, no ribbing, moderate gloss, smooth surface and back surface, uniform thickness, uniform width, reasonable hardness, high elasticity, good quality, strong wear resistance, trimmed and sealed The color of the side and the side is close to the surface color, not whitish, good gloss, and the overall color of the finished furniture is coordinated.
PVC furniture edge banding is relatively light, which is relative to metal and plexiglass. The reason for the lightness is not because it is a polymer compound, but because they are organic compounds, which are composed of carbon, hydrogen, oxygen, and chlorine. And other lighter elements. PVC Edge Banding,Edge Banding Pvc,Pvc U Trim Edge Banding,Pvc Edge Banding Trimmer Henan Shunbang Chemical Industry CO.,Ltd , https://www.pvcresinchem.com
The material of pvc furniture edge banding is plastic, which is easy to process. Plastic has plasticity, that is, it deforms after heating or pressurizing, and maintains its original shape after the temperature drops or the pressure disappears. It can be processed into edge bands of their respective shapes by extrusion and other methods, such as T-shaped edge bands, H-shaped edge bands, D-shaped edge bands, V-shaped edge bands, I-shapes, and so on.
pvc furniture edge banding is of high quality and low price, and the price of plastic is far less than that of metal.